Self-locking nut.



1.1. suvoan.

SELF LOCKING NUT.

APPLICATION FILED MIIJI. I014. v 1,141,280. Patented {we 1, 1915.

mJ m W J WITNESSES Zd- .Qm: W

JOHN J. smrnnn, or JERSEY our; NEW JERSEY.

SELF-LOCKING NUT.

fipcciflcattpn of Letters iatent.

Patented J une 1, 191(.

Application filed August 31,1914. Serial No. 859,388.

tatc of New Jersey, have invented new and useful lmprovmucuts in Self-Locking Nuts, of which the following is a specificalion.

My invention relates to self-locking nuts and has as its ob ect to provide a device of this character wlueh automatically locks on any threaded bolt it is adapted to be.

used for, so that when once set it cannot slip hack or loosen its grip.on the bolt, unless so desired.

A further object of my invention is to provide a device of the above said character which can be set in a manner that it moves freely on and off the threaded bolt, when so desired.

A. final object of my invention is .to provide a device of the said character that can be manufactured at a very low cost, is effective and unfailing in its purpose and does entirely away with jam nuts and the like.

I attain my objects by providing a constlllctinn as hereinafter shown and described.

In the accompanying drawing: Figure 1 is a perspective view .of a nut constructed according to my invention, locked on a proper threaded bolt in conjunction with which it has to be used. Fig. 2 is an end-- elevation of the same. Fig. 3 is a detail olevational view of part of the construction. I i 4 is a section taken on the line "l of "ig. 2. Fig. 6 is a partly sectional and partly elevational view the section being taken on the line 5-5 of Fig. 3. Fig. (i is a sectional yiow of the threaded bolt.

Referring more particularly to the drawing, 1 designates a nut provided at the outer surface of the same, in respect to the threaded bolt it engages, with a depression substantially of the shape shown in the drawing, and slightly slanting from the outer edge 3 of the nut toward its inner edge 4, forming an incline at the bottom of said depression 2 which risesgradually from the inner part of the nut to its outer periphery, in a slight degree.

In one or more corners of the nut 1, within a depression such "a above described, of

which I can provide one or more on each nut, a pivot stud such as 5 is fixedly mount.-

ed or else a set screw fitted into a female thread provided in the nut for that pin-pose, and pivoted on the stud 5 is a do," (3 moving freely from the point a to b o the dcprcssion 2, whereas after passing the point 2 and pushed further back toward the point 0 of the same, it gets jammed by the incline of the bottom of the depression 2 sailiciently to stickthere until released by a pressure with a finger or. some instrument, pushinf it away from the point c toward point The dog 6 has a groove around its bushing, about centrally of its thickness and a hole pierced through the dog 6 in'front of the pivot stud 5. A piece of flexible wire 7 is passed through the said hole and around the groove, leaning with one end against the back of the dog 6 and with the other a ainst the wall of the depression 2 and t ius forming a spring which normally tends tn push the dog (3 forward in the direction of the point a and certainly past the point 6. I provide longitudinal grooves such as 8, three 'or more of them as may be required, in the thread of the bolt 9 to be used in conjunction with my nut and when the nut 1 is screwed on upon the bolt 9 the dog 6, in consequence of the action oft 1e spring 7, is forced to engage in succession each of the grooves 8 and thereby the nut cannot slip back from the position it has been fixed at, unless the dog is pried out by the linger or some tool from its engagement with the groove. If it is desired to remove the nut, the dog 6 can be pushed back toward the point 0 of the depression 2, where it will be jammed and the nut will come off freely.

In order to get as many points of attaclc for the dog 6 and thereby to provide a possibly large number of locking points, so that the nut can he adiusted practically at any position desired, may provide two or more dogs on each nut. and as large a. number of grooves on the bolt as is consistent with its eiliciency and with the strain placed on it.

Having thus described the preferred form of my invention, it wil he understood that I do not want to be limited to its mechanical details and l coutem date such changes in the construction of tie nut which will LlilluilCC its eilicienny without; departing fnan the principles of my invention as delined by the nm'rended claim. f

Ha ing thus full shown and described my invention, what claim is: i

The combination with a threaded bolt likving a plurality of longitudinal grooves in its threaded part, of a nut having in one corner of its outer face a recess, a pivot stud rigidly mounted in said recess, a pawl pivotally mounted on' said stud, 0. spring passed around the huh of said pawl huvin -ono end bearing a ainst the outer Wall 0 said reeess, the ot er end in enga ement with the outer edge of said pawl, an tending to keep the latterxin a position projecting into the bore of the nut, so as to engage said longitudinal grooves of'the bolt and automatically prevent .the nut from coming forth.

' JOHN J. SNYDER. \Vitnesses:

ALEXANDER Dumas, Amman IIAMBURGER. 

